Making a sphere smooth again

I had a sphere that I’m using as the base for a character’s head, and I used GameDraw to reshape part of the head so that he could have different facial features. He’s supposed to look crude and puppet-like so this is really all I need but when I cut away the part for his mouth, it made the polys that form the sphere visible instead of smooth (like you see in the rest of his model). I wondered if anybody was familiar with a way to put the smoothness back?
[24527-game+charater.jpg|24527]

If you would like to do this in Unity, you’ll have to toy around with the Model Import settings for the sphere. An alternate option would be to smooth the mesh in GameDraw but I’m not sure if that is possible.

The model import settings can be found by clicking on the model asset in your library. It will show this window: Model Import Window

In order to get the smoothness back you’ll have to play around with the Normals setting. Try setting Normals to Calculate and drag the slider to the right. This will instruct unity to make sharper edges smooth. Playing around with this setting may give you what you desire.

Well, your model needs “smooth normals”. Since they are flatshaded at the moment means the faces are already split. You should try to fix the vertex normals in your modelling tool.

Another option is to let Unity calculate the normals on import by setting the “Normals” to calculate in the FBX importer settings of your model. However if the faces are already split in the model file itself i doubt that Unity can “fix” the normals since your mesh don’t have any shared vertices in this case.